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Is perianth part of the sporophyte or gametophyte in liverworts (Marchantiophyta)?

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I think it should be a part of the gametophyte because it is formed from the fusion of leaves (which are haploid) and protects the archegonium and the developing capsule.

It also can be logically thought out. Since it develops before the sporophyte forms , it should be part of the gametophyte.

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Here it is stated explicitly. – har-wradim Jan 30 '14 at 13:42

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